It's the biggest book prize in the British calendar: but how much do you really know about the Booker Prize?
Since it was first awarded to P. H. Newby for Something to Answer For in 1969, the Booker has had its fair share of unusual moments, from author tantrums to last minute judging decisions to, one year, no prize being given at all.
So ahead of tonight's big announcement, why not swot up on which year only two books made the shortlist, which author was excluded for being too sexist and which book was once voted the greatest Booker winner of them all...